Big Gun Exhaust Rev Box CDI Unit for 1992-08 Yamaha YFM80 models - 40-R28 MPN_25-2057 1992 Yamaha SR500 Exciter

1992 Yamaha SR500 Exciter

2014 Husqvarna TE125

1993 Suzuki GSX-R600W

2004 Harley-Davidson XL883 Sportster 883

Big Gun Exhaust Rev Box CDI Unit for 1992-08 Yamaha YFM80 models - 40-R28 MPN_25-2057 1992 Yamaha SR500 ExciterBig Gun Exhaust Rev Box CDI Unit Increases overall RPM limit Advanced timing curve Easy direct plug in replacement to stock CDI box 6 month Limited Warranty If you are looking to swap out your stock CDI box, the Big Gun Rev Box is an affordable alternative to highly priced OEM replacement boxes. It increases the overall RPM limit over the stock box and advances the timing curve. The Big Gun Rev Box is offered for various offroad MX and ATV models.